Sync with oslo-incubator and add importutils

From oslo-incubator commit:
    c4bfdb94c25b4488da61d77184d97f8784f21a11

Change-Id: I81d1113d113faa609ab7713a0e04667b11786247

openstack-common.conf

@@ -1,7 +1,9 @@
 [DEFAULT]
 
 # The list of modules to copy from openstack-common
+module=gettextutils
 module=install_venv_common
+module=importutils
 module=strutils
 
 # The base module to hold the copy of openstack.common

openstackclient/openstack/common/gettextutils.py

@@ -23,7 +23,6 @@ Usual usage in an openstack.common module:
 """
 
 import copy
-import functools
 import gettext
 import locale
 from logging import handlers
@@ -42,7 +41,7 @@ class TranslatorFactory(object):
     """Create translator functions
     """
 
-    def __init__(self, domain, lazy=False, localedir=None):
+    def __init__(self, domain, localedir=None):
         """Establish a set of translation functions for the domain.
 
         :param domain: Name of translation domain,
@@ -55,7 +54,6 @@ class TranslatorFactory(object):
         :type localedir: str
         """
         self.domain = domain
-        self.lazy = lazy
         if localedir is None:
             localedir = os.environ.get(domain.upper() + '_LOCALEDIR')
         self.localedir = localedir
@@ -75,16 +73,19 @@ class TranslatorFactory(object):
         """
         if domain is None:
             domain = self.domain
-        if self.lazy:
-            return functools.partial(Message, domain=domain)
-        t = gettext.translation(
-            domain,
-            localedir=self.localedir,
-            fallback=True,
-        )
-        if six.PY3:
-            return t.gettext
-        return t.ugettext
+        t = gettext.translation(domain,
+                                localedir=self.localedir,
+                                fallback=True)
+        # Use the appropriate method of the translation object based
+        # on the python version.
+        m = t.gettext if six.PY3 else t.ugettext
+
+        def f(msg):
+            """oslo.i18n.gettextutils translation function."""
+            if USE_LAZY:
+                return Message(msg, domain=domain)
+            return m(msg)
+        return f
 
     @property
     def primary(self):
@@ -147,19 +148,11 @@ def enable_lazy():
     your project is importing _ directly instead of using the
     gettextutils.install() way of importing the _ function.
     """
-    # FIXME(dhellmann): This function will be removed in oslo.i18n,
-    # because the TranslatorFactory makes it superfluous.
-    global _, _LI, _LW, _LE, _LC, USE_LAZY
-    tf = TranslatorFactory('openstackclient', lazy=True)
-    _ = tf.primary
-    _LI = tf.log_info
-    _LW = tf.log_warning
-    _LE = tf.log_error
-    _LC = tf.log_critical
+    global USE_LAZY
     USE_LAZY = True
 
 
-def install(domain, lazy=False):
+def install(domain):
     """Install a _() function using the given translation domain.
 
     Given a translation domain, install a _() function using gettext's
@@ -170,26 +163,14 @@ def install(domain, lazy=False):
     a translation-domain-specific environment variable (e.g.
     NOVA_LOCALEDIR).
 
+    Note that to enable lazy translation, enable_lazy must be
+    called.
+
     :param domain: the translation domain
-    :param lazy: indicates whether or not to install the lazy _() function.
-                 The lazy _() introduces a way to do deferred translation
-                 of messages by installing a _ that builds Message objects,
-                 instead of strings, which can then be lazily translated into
-                 any available locale.
     """
-    if lazy:
-        from six import moves
-        tf = TranslatorFactory(domain, lazy=True)
-        moves.builtins.__dict__['_'] = tf.primary
-    else:
-        localedir = '%s_LOCALEDIR' % domain.upper()
-        if six.PY3:
-            gettext.install(domain,
-                            localedir=os.environ.get(localedir))
-        else:
-            gettext.install(domain,
-                            localedir=os.environ.get(localedir),
-                            unicode=True)
+    from six import moves
+    tf = TranslatorFactory(domain)
+    moves.builtins.__dict__['_'] = tf.primary
 
 
 class Message(six.text_type):
@@ -373,8 +354,8 @@ def get_available_languages(domain):
                'zh_Hant_HK': 'zh_HK',
                'zh_Hant': 'zh_TW',
                'fil': 'tl_PH'}
-    for (locale, alias) in six.iteritems(aliases):
-        if locale in language_list and alias not in language_list:
+    for (locale_, alias) in six.iteritems(aliases):
+        if locale_ in language_list and alias not in language_list:
             language_list.append(alias)
 
     _AVAILABLE_LANGUAGES[domain] = language_list

openstackclient/openstack/common/importutils.py

@@ -0,0 +1,73 @@
+# Copyright 2011 OpenStack Foundation.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""
+Import related utilities and helper functions.
+"""
+
+import sys
+import traceback
+
+
+def import_class(import_str):
+    """Returns a class from a string including module and class."""
+    mod_str, _sep, class_str = import_str.rpartition('.')
+    __import__(mod_str)
+    try:
+        return getattr(sys.modules[mod_str], class_str)
+    except AttributeError:
+        raise ImportError('Class %s cannot be found (%s)' %
+                          (class_str,
+                           traceback.format_exception(*sys.exc_info())))
+
+
+def import_object(import_str, *args, **kwargs):
+    """Import a class and return an instance of it."""
+    return import_class(import_str)(*args, **kwargs)
+
+
+def import_object_ns(name_space, import_str, *args, **kwargs):
+    """Tries to import object from default namespace.
+
+    Imports a class and return an instance of it, first by trying
+    to find the class in a default namespace, then failing back to
+    a full path if not found in the default namespace.
+    """
+    import_value = "%s.%s" % (name_space, import_str)
+    try:
+        return import_class(import_value)(*args, **kwargs)
+    except ImportError:
+        return import_class(import_str)(*args, **kwargs)
+
+
+def import_module(import_str):
+    """Import a module."""
+    __import__(import_str)
+    return sys.modules[import_str]
+
+
+def import_versioned_module(version, submodule=None):
+    module = 'openstackclient.v%s' % version
+    if submodule:
+        module = '.'.join((module, submodule))
+    return import_module(module)
+
+
+def try_import(import_str, default=None):
+    """Try to import a module and if it fails return default."""
+    try:
+        return import_module(import_str)
+    except ImportError:
+        return default

openstackclient/openstack/common/strutils.py

@@ -50,6 +50,39 @@ SLUGIFY_STRIP_RE = re.compile(r"[^\w\s-]")
 SLUGIFY_HYPHENATE_RE = re.compile(r"[-\s]+")
 
 
+# NOTE(flaper87): The following globals are used by `mask_password`
+_SANITIZE_KEYS = ['adminPass', 'admin_pass', 'password', 'admin_password']
+
+# NOTE(ldbragst): Let's build a list of regex objects using the list of
+# _SANITIZE_KEYS we already have. This way, we only have to add the new key
+# to the list of _SANITIZE_KEYS and we can generate regular expressions
+# for XML and JSON automatically.
+_SANITIZE_PATTERNS_2 = []
+_SANITIZE_PATTERNS_1 = []
+
+# NOTE(amrith): Some regular expressions have only one parameter, some
+# have two parameters. Use different lists of patterns here.
+_FORMAT_PATTERNS_1 = [r'(%(key)s\s*[=]\s*)[^\s^\'^\"]+']
+_FORMAT_PATTERNS_2 = [r'(%(key)s\s*[=]\s*[\"\']).*?([\"\'])',
+                      r'(%(key)s\s+[\"\']).*?([\"\'])',
+                      r'([-]{2}%(key)s\s+)[^\'^\"^=^\s]+([\s]*)',
+                      r'(<%(key)s>).*?(</%(key)s>)',
+                      r'([\"\']%(key)s[\"\']\s*:\s*[\"\']).*?([\"\'])',
+                      r'([\'"].*?%(key)s[\'"]\s*:\s*u?[\'"]).*?([\'"])',
+                      r'([\'"].*?%(key)s[\'"]\s*,\s*\'--?[A-z]+\'\s*,\s*u?'
+                      '[\'"]).*?([\'"])',
+                      r'(%(key)s\s*--?[A-z]+\s*)\S+(\s*)']
+
+for key in _SANITIZE_KEYS:
+    for pattern in _FORMAT_PATTERNS_2:
+        reg_ex = re.compile(pattern % {'key': key}, re.DOTALL)
+        _SANITIZE_PATTERNS_2.append(reg_ex)
+
+    for pattern in _FORMAT_PATTERNS_1:
+        reg_ex = re.compile(pattern % {'key': key}, re.DOTALL)
+        _SANITIZE_PATTERNS_1.append(reg_ex)
+
+
 def int_from_bool_as_string(subject):
     """Interpret a string as a boolean and return either 1 or 0.
 
@@ -237,3 +270,42 @@ def to_slug(value, incoming=None, errors="strict"):
         "ascii", "ignore").decode("ascii")
     value = SLUGIFY_STRIP_RE.sub("", value).strip().lower()
     return SLUGIFY_HYPHENATE_RE.sub("-", value)
+
+
+def mask_password(message, secret="***"):
+    """Replace password with 'secret' in message.
+
+    :param message: The string which includes security information.
+    :param secret: value with which to replace passwords.
+    :returns: The unicode value of message with the password fields masked.
+
+    For example:
+
+    >>> mask_password("'adminPass' : 'aaaaa'")
+    "'adminPass' : '***'"
+    >>> mask_password("'admin_pass' : 'aaaaa'")
+    "'admin_pass' : '***'"
+    >>> mask_password('"password" : "aaaaa"')
+    '"password" : "***"'
+    >>> mask_password("'original_password' : 'aaaaa'")
+    "'original_password' : '***'"
+    >>> mask_password("u'original_password' :   u'aaaaa'")
+    "u'original_password' :   u'***'"
+    """
+    message = six.text_type(message)
+
+    # NOTE(ldbragst): Check to see if anything in message contains any key
+    # specified in _SANITIZE_KEYS, if not then just return the message since
+    # we don't have to mask any passwords.
+    if not any(key in message for key in _SANITIZE_KEYS):
+        return message
+
+    substitute = r'\g<1>' + secret + r'\g<2>'
+    for pattern in _SANITIZE_PATTERNS_2:
+        message = re.sub(pattern, substitute, message)
+
+    substitute = r'\g<1>' + secret
+    for pattern in _SANITIZE_PATTERNS_1:
+        message = re.sub(pattern, substitute, message)
+
+    return message